A multivalued storage system using memristor

For many years the only known passive circuit elements were resistor, inductor and capacitor. In 1971, Leon Chua showed using argument that there should exist another passive element which he named memristor. It is basically a resistor whose resistance increases when current flows through it from one direction and decreases when current flows from the other direction. After 37 years researchers of HP became able to build world's first working memristor and surprised the electronics community. Chua proved that the characteristics of a memristor cannot be simulated using resistor, capacitor and inductor only and hence it is a fundamental element. Many new types of circuits can be built using memristor in it. But as it is a very new element so the no. of circuits is only a few. As memristor can have many resistance levels, we can use some discrete value as different logic level and thus can use in multivalued logic system. In this paper a method has been shown to achieve those different levels. Using this method we can use an array of memristor for making a non-volatile multivalued data storage system..